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$\bar{K}\Lambda$ molecular explanation to the newly observed $\Xi(1620)^0$
- Source :
- Phys. Rev. D 100, 074006 (2019)
- Publication Year :
- 2019
-
Abstract
- The newly observed $\Xi(1620)^0$ by the Belle Collaboration inspires our interest in performing a systematic study on the interaction of an anti-strange meson $(\bar{K}^{(*)})$ with a strange or doubly strange ground octet baryon $\mathcal{B}$ ($\Lambda$, $\Sigma$, and $\Xi$), where the spin-orbit force and the recoil correction are considered in the adopted one-boson-exchange model. Our results indicate that $\Xi(1620)^0$ can be explained as a $\bar{K}\Lambda$ molecular state with $I(J^P)=1/2(1/2^-)$ and the intermediate force from $\sigma$ exchange plays an important role. Additionally, we also predict several other possible molecular candidates, i.e., the $\bar{K}\Sigma$ molecular state with $I(J^P)=1/2(1/2^-)$ and the triply strange $\bar{K}\Xi$ molecular state with $I(J^P)=0(1/2^-)$.<br />Comment: 7 pages, 5 figures, and 4 tables
- Subjects :
- High Energy Physics - Phenomenology
Subjects
Details
- Database :
- arXiv
- Journal :
- Phys. Rev. D 100, 074006 (2019)
- Publication Type :
- Report
- Accession number :
- edsarx.1906.05553
- Document Type :
- Working Paper
- Full Text :
- https://doi.org/10.1103/PhysRevD.100.074006